Mitsubishi S12A2 User Manual

12-7
Chapter 12 AIR START SYSTEM
2.2 Starter Valve - Inspect
2.2.1 Clearance Between Starter Valve and Starter
Valve Guide - Measure
(1) Measure the starter valve outside diameter and starter
valve guide inside diameter, and calculate the clear-
ance.
(2) If the value exceeds the limit, replace the starter valve
or starter valve guide with a new one. Change the part
with larger difference value to the standard.
Clearance Between Starter Valve and Starter Valve
Guide - Measure
2.2.2 Free Length of Valve Spring - Measure
Measure the free length of valve spring.
If the value exceeds the limit, replace the valve spring with
a new one.
Free Length of Valve Spring - Measure
Item
Nominal
value
Standard value Limit value
Starter valve
outside diameter
ø13 mm
[0.51 in.]
12.973 to 12.984 mm
[0.5107 to 0.5112 in.]
-
Starter valve
inside diameter
ø13 mm
[0.51 in.]
13.000 to 13.018 mm
[0.5118 to 0.5125 in.]
-
Clearance between
valve and valve
guide
0.016 to 0.045 mm
[0.0006 to 0.0018 in.]
0.100 mm
[0.0039 in.]
Item Standard value Limit value
Valve spring free length 30 mm [1.18 in.] 28 mm [1.10 in.]

Mitsubishi S12A2 Specifications

General

Brand	Mitsubishi
Model	S12A2
Category	Engine
Language	English